Hydraulic and pneumatic systems have always found many fields of application in all industrial applications, where the goal was the transfer of energy and the production of work from fluids (fluid dynamics) to significant production processes, such as processing, packaging, transportation, etc. The main aim of this book is for readers to gain an in-depth understanding of this particular subject and to adequately cover the theoretical aspects of the operational characteristics of hydraulic and pneumatic systems. Additionally, to learn the advantages and disadvantages of one system over the other, so that they are able to make the right choice of such systems for the design and implementation of industrial processes. Furthermore, they will be able to recognize all hydraulic and pneumatic modules and their necessary peripherals, with the ultimate goal of applying automation methods and techniques for their control, effectively and safely. It is worth noting that a separate chapter in the book is dedicated to the specific section on the safe use of these systems, given the strict measures and continuously increasing application specifications set by global certification bodies. The book is a complete guide to the applications of hydraulic and pneumatic systems, covering in a simple and easily understandable way, without complex mathematical analyses, all the necessary tools for industrial field engineers, or for the training of future design and production engineers, such as students of related schools.